Home / 78,589.06-117,890.58-22,428.11

Finding the Fourth Proportional to 78,589.06, 117,890.58 and 22,428.11

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Solution

The fourth proportional to 78,589.06, 117,890.58 and 22,428.11 is: 33,644.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,589.06 : 117,890.58 = 22,428.11 : x
  2. Step 2: Convert to fraction form
    78,589.06/117,890.58 = 22,428.11/x
  3. Step 3: Cross multiply
    78,589.06x = 117,890.58 × 22,428.11
  4. Step 4: Simplify right side
    78,589.06x = 2,644,062,896.20
  5. Step 5: Solve for x
    x = 2,644,062,896.20/78,589.06
  6. Step 6: Final answer
    x = 33,644.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.